Injection molding machine control device, injection molding machine, and program

Abstract

To reduce operation burden of a user.SOLUTION: A control device of an injection molding machine includes: an acceptance part for accepting selection of a process of an injection molding machine and selection of an item indicating set information indicating setting of the process or an actual value detected in the process; and an output part for outputting display information indicating change in the set information based on the item previously associated with the process accepting the selection or the actual value by a graph, to a display device, when the acceptance part accepts the selection of the process.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control device for an injection molding machine, an injection molding machine, and a program. [Background technology]

[0002] Conventionally, injection molding machines are provided with various sensors. Therefore, a technique has been proposed for the injection molding machine in which the results of various operations during injection molding based on detection signals from the sensors or waveform data that represents user-set information in the form of a waveform is displayed on a display device.

[0003] In recent years, various techniques have been proposed for displaying waveform data on the display device of an injection molding machine. For example, in cited document 1, a technique is proposed in which, when displaying waveform data showing the detection results for each of a plurality of items, a scale is displayed for each item, thereby allowing the display device to also function as a measuring device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-155065 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology described in Patent Document 1, items to be displayed for each process are preset. However, the items that a user wants to display often differ depending on the situation. For this reason, a technology has been proposed that allows the user to select the items to be displayed.

[0006] However, if the items to be displayed for each process are selectable, the user must select the items to be displayed from multiple items each time the process is switched. Because there are many types of selectable items, the operations required when switching processes become complicated, which increases the operational burden on the user.

[0007] One aspect of the present invention provides a technique for reducing the operational burden when switching the display of processes in an injection molding machine. [Means for solving the problem]

[0008] A control device for an injection molding machine according to one embodiment of the present invention has a reception unit that receives a selection of a process of the injection molding machine and a selection of setting information indicating the settings of the process or an item indicating an actual value detected at the process, and an output unit that, when the reception unit receives the selection of the process, outputs to a display device display information that shows, in a graph, the setting information or the change in the actual value based on the item that is previously associated with the process whose selection was received. Effect of the Invention

[0009] According to one aspect of the present invention, the operational burden on the user is reduced by automatically switching to an item associated with a process. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing a state when mold opening of the injection molding machine according to the first embodiment is completed. [Diagram 2] FIG. 2 is a diagram showing a state during mold clamping of the injection molding machine according to the first embodiment. [Diagram 3] FIG. 3 is a functional block diagram illustrating components of the control device according to the first embodiment. [Figure 4] FIG. 4 is a diagram illustrating a table structure of the process correspondence information storage unit according to the first embodiment. [Diagram 5] FIG. 5 is a diagram illustrating a display screen output by the output unit according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing a pop-up screen output by the output unit when a change operation for a process in the trigger field is accepted in the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating a display screen output by the output unit according to the first embodiment. [Figure 8] FIG. 8 is a flowchart showing the control performed when a process selection is received in the control device according to the first embodiment. [Figure 9] FIG. 9 is a diagram illustrating a display screen output by an output unit according to the second embodiment. [Figure 10] FIG. 10 is a diagram showing a pop-up screen output by the output unit when a change operation for a process in the trigger column is accepted in the second embodiment. [Figure 11] FIG. 11 is a diagram illustrating a display screen output by an output unit according to the second embodiment. [Figure 12] FIG. 12 is a flowchart showing control performed when a process selection is received in the control device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and the description thereof may be omitted.

[0012] FIG. 1 is a diagram showing a state when mold opening is completed in the injection molding machine according to the first embodiment. FIG. 2 is a diagram showing a state when the injection molding machine according to the first embodiment is clamping. In this specification, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. The X-axis direction and the Y-axis direction represent the horizontal direction, and the Z-axis direction represents the vertical direction. When the mold clamping device 100 is of a horizontal type, the X-axis direction is the mold opening / closing direction, and the Y-axis direction is the width direction of the injection molding machine 10. The negative side in the Y-axis direction is called the operation side, and the positive side in the Y-axis direction is called the anti-operation side.

[0013] As shown in FIG. 1 and FIG. 2, the injection molding machine 10 includes a mold clamping device 100 that opens and closes a mold device 800, an ejector device 200 that ejects a molded product molded by the mold device 800, an injection device 300 that injects a molding material into the mold device 800, a moving device 400 that moves the injection device 300 forward and backward relative to the mold device 800, a control device 700 that controls each component of the injection molding machine 10, and a frame 900 that supports each component of the injection molding machine 10. The frame 900 includes a mold clamping device frame 910 that supports the mold clamping device 100, and an injection device frame 920 that supports the injection device 300. The mold clamping device frame 910 and the injection device frame 920 are each installed on the floor 2 via a leveling adjuster 930. The control device 700 is disposed in the internal space of the injection device frame 920. Hereinafter, each component of the injection molding machine 10 will be described.

[0014] (mold clamping device) In the description of the clamping unit 100, the moving direction of the movable platen 120 during mold closing (for example, the positive direction of the X-axis) is the front, and the moving direction of the movable platen 120 during mold opening (for example, the negative direction of the X-axis) is the rear.

[0015] The mold clamping device 100 performs mold closing, pressurization, mold clamping, depressurization, and mold opening of the mold device 800. The mold device 800 includes a fixed mold 810 and a movable mold 820. The mold clamping device 100 is, for example, a horizontal type, and the mold opening and closing direction is horizontal. The mold clamping device 100 has a fixed platen 110 to which the fixed mold 810 is attached, a movable platen 120 to which the movable mold 820 is attached, and a movement mechanism 102 that moves the movable platen 120 in the mold opening and closing direction relative to the fixed platen 110.

[0016] The stationary platen 110 is fixed to the mold clamping unit frame 910. A stationary mold 810 is attached to the surface of the stationary platen 110 that faces the movable platen 120.

[0017] The movable platen 120 is disposed so as to be movable in the mold opening / closing direction relative to the mold clamping unit frame 910. A guide 101 for guiding the movable platen 120 is disposed on the mold clamping unit frame 910. A movable mold 820 is attached to the surface of the movable platen 120 facing the fixed platen 110.

[0018] The moving mechanism 102 advances and retreats the movable platen 120 relative to the fixed platen 110, thereby performing mold closing, pressurization, mold clamping, depressurization, and mold opening of the mold apparatus 800. The moving mechanism 102 has a toggle support 130 disposed at a distance from the fixed platen 110, a tie bar 140 connecting the fixed platen 110 and the toggle support 130, a toggle mechanism 150 that moves the movable platen 120 in the mold opening and closing direction relative to the toggle support 130, a mold clamping motor 160 that operates the toggle mechanism 150, a motion conversion mechanism 170 that converts the rotational motion of the mold clamping motor 160 into linear motion, and a mold thickness adjustment mechanism 180 that adjusts the distance between the fixed platen 110 and the toggle support 130.

[0019] The toggle support 130 is disposed at a distance from the fixed platen 110, and is placed on the mold clamping unit frame 910 so as to be freely movable in the mold opening and closing direction. The toggle support 130 may be disposed so as to be freely movable along a guide laid on the mold clamping unit frame 910. The guide of the toggle support 130 may be the same as the guide 101 of the movable platen 120.

[0020] In this embodiment, the fixed platen 110 is fixed to the mold clamping unit frame 910, and the toggle support 130 is arranged so as to be freely movable in the mold opening and closing direction relative to the mold clamping unit frame 910, but the toggle support 130 may be fixed to the mold clamping unit frame 910, and the fixed platen 110 may be arranged so as to be freely movable in the mold opening and closing direction relative to the mold clamping unit frame 910.

[0021] The tie bar 140 connects the fixed platen 110 and the toggle support 130 at a distance L in the mold opening / closing direction. A plurality of tie bars 140 (for example, four) may be used. The plurality of tie bars 140 are arranged parallel to the mold opening / closing direction and extend according to the mold clamping force. At least one tie bar 140 may be provided with a tie bar strain detector 141 that detects strain of the tie bar 140. The tie bar strain detector 141 sends a signal indicating the detection result to the control device 700. The detection result of the tie bar strain detector 141 is used for detecting the mold clamping force, etc.

[0022] In this embodiment, the tie bar strain detector 141 is used as the clamping force detector for detecting the clamping force, but the present invention is not limited to this. The clamping force detector is not limited to the strain gauge type, and may be a piezoelectric type, a capacitive type, a hydraulic type, an electromagnetic type, or the like, and the attachment position thereof is also not limited to the tie bar 140.

[0023] The toggle mechanism 150 is disposed between the movable platen 120 and the toggle support 130, and moves the movable platen 120 relative to the toggle support 130 in the mold opening / closing direction. The toggle mechanism 150 has a crosshead 151 that moves in the mold opening / closing direction, and a pair of link groups that bend and stretch with the movement of the crosshead 151. Each of the pair of link groups has a first link 152 and a second link 153 that are connected to bendable and stretchable by a pin or the like. The first link 152 is attached to the movable platen 120 by a pin or the like so as to be swingable. The second link 153 is attached to the toggle support 130 by a pin or the like so as to be swingable. The second link 153 is attached to the crosshead 151 via a third link 154. When the crosshead 151 is advanced or retreated relative to the toggle support 130, the first link 152 and the second link 153 bend and stretch, and the movable platen 120 advances or retreats relative to the toggle support 130.

[0024] The configuration of toggle mechanism 150 is not limited to the configuration shown in Figures 1 and 2. For example, although the number of joints in each link group is five in Figures 1 and 2, it may be four, and one end of third link 154 may be connected to a joint between first link 152 and second link 153.

[0025] The mold clamping motor 160 is attached to the toggle support 130 and operates the toggle mechanism 150. The mold clamping motor 160 advances and retreats the crosshead 151 relative to the toggle support 130, thereby bending and extending the first link 152 and the second link 153 and advancing and retreating the movable platen 120 relative to the toggle support 130. The mold clamping motor 160 is directly connected to the motion conversion mechanism 170, but may also be connected to the motion conversion mechanism 170 via a belt, a pulley, or the like.

[0026] The motion conversion mechanism 170 converts the rotational motion of the mold clamping motor 160 into the linear motion of the crosshead 151. The motion conversion mechanism 170 includes a screw shaft and a screw nut that screws onto the screw shaft. A ball or roller may be interposed between the screw shaft and the screw nut.

[0027] The mold clamping unit 100 performs a mold closing process, a pressure increase process, a mold clamping process, a pressure release process, a mold opening process, and the like under the control of the control device 700.

[0028] In the mold closing process, the mold clamping motor 160 is driven to move the crosshead 151 forward at a set moving speed to a mold closing completion position, thereby moving the movable platen 120 forward and bringing the movable mold 820 into contact with the fixed mold 810. The position and moving speed of the crosshead 151 are detected by using, for example, a mold clamping motor encoder 161. The mold clamping motor encoder 161 detects the rotation of the mold clamping motor 160 and sends a signal indicating the detection result to the control device 700.

[0029] The crosshead position detector that detects the position of the crosshead 151 and the crosshead movement speed detector that detects the movement speed of the crosshead 151 are not limited to the mold clamping motor encoder 161, and general devices can be used. Furthermore, the movable platen position detector that detects the position of the movable platen 120 and the movable platen movement speed detector that detects the movement speed of the movable platen 120 are not limited to the mold clamping motor encoder 161, and general devices can be used.

[0030] In the pressure increasing step, the mold clamping motor 160 is further driven to move the crosshead 151 further forward from the mold closing completion position to the mold clamping position, thereby generating a mold clamping force.

[0031] In the mold clamping process, the mold clamping motor 160 is driven to maintain the position of the crosshead 151 at the mold clamping position. In the mold clamping process, the mold clamping force generated in the pressure increase process is maintained. In the mold clamping process, a cavity space 801 (see FIG. 2) is formed between the movable mold 820 and the fixed mold 810, and the injection device 300 fills the cavity space 801 with liquid molding material. The filled molding material is solidified to obtain a molded product.

[0032] The number of cavity spaces 801 may be one or more. In the latter case, multiple molded products are obtained at the same time. An insert material may be placed in a part of the cavity space 801, and another part of the cavity space 801 may be filled with a molding material. A molded product in which the insert material and the molding material are integrated is obtained.

[0033] In the depressurization process, the mold clamping motor 160 is driven to move the crosshead 151 back from the mold clamping position to the mold opening start position, thereby moving the movable platen 120 back and reducing the mold clamping force. The mold opening start position and the mold closing completion position may be the same position.

[0034] In the mold opening process, the mold clamping motor 160 is driven to move the crosshead 151 backward at a set moving speed from the mold opening start position to the mold opening completion position, thereby moving the movable platen 120 backward and separating the movable mold 820 from the fixed mold 810. After that, the ejector unit 200 ejects the molded product from the movable mold 820.

[0035] The setting conditions in the mold closing process, the pressure increase process, and the mold clamping process are set together as a series of setting conditions. For example, the moving speed and position of the crosshead 151 in the mold closing process and the pressure increase process (including the mold closing start position, the moving speed switching position, the mold closing completion position, and the mold clamping position) and the mold clamping force are set together as a series of setting conditions. The mold closing start position, the moving speed switching position, the mold closing completion position, and the mold clamping position are arranged in this order from the rear side to the front, and represent the start point and the end point of the section in which the moving speed is set. The moving speed is set for each section. There may be one or more moving speed switching positions. The moving speed switching position does not have to be set. Only one of the mold clamping position and the mold clamping force may be set.

[0036] The setting conditions in the depressurization process and mold opening process are set in the same manner. For example, the movement speed and position of the crosshead 151 in the depressurization process and mold opening process (mold opening start position, movement speed switching position, and mold opening completion position) are set together as a series of setting conditions. The mold opening start position, movement speed switching position, and mold opening completion position are arranged in this order from the front to the rear, and represent the start and end points of the section in which the movement speed is set. The movement speed is set for each section. There may be one or more movement speed switching positions. The movement speed switching position does not have to be set. The mold opening start position and the mold closing completion position may be the same position. Also, the mold opening completion position and the mold closing start position may be the same position.

[0037] Note that the moving speed and position of the movable platen 120 may be set instead of the moving speed and position of the crosshead 151. Moreover, the clamping force may be set instead of the position of the crosshead (e.g., the clamping position) or the position of the movable platen.

[0038] Incidentally, the toggle mechanism 150 amplifies the driving force of the mold clamping motor 160 and transmits it to the movable platen 120. The amplification ratio is also called the toggle ratio. The toggle ratio changes according to the angle θ between the first link 152 and the second link 153 (hereinafter also referred to as the "link angle θ"). The link angle θ is determined from the position of the crosshead 151. When the link angle θ is 180°, the toggle ratio is maximum.

[0039] When the thickness of the mold device 800 changes due to replacement of the mold device 800 or a temperature change of the mold device 800, a mold thickness adjustment is performed so that a predetermined clamping force is obtained during mold clamping. In the mold thickness adjustment, for example, the distance L between the fixed platen 110 and the toggle support 130 is adjusted so that the link angle θ of the toggle mechanism 150 becomes a predetermined angle at the mold touch time when the movable mold 820 touches the fixed mold 810.

[0040] The mold clamping device 100 has a mold thickness adjustment mechanism 180. The mold thickness adjustment mechanism 180 adjusts the mold thickness by adjusting the distance L between the fixed platen 110 and the toggle support 130. The mold thickness adjustment is performed, for example, between the end of a molding cycle and the start of the next molding cycle. The mold thickness adjustment mechanism 180 has, for example, a screw shaft 181 formed at the rear end of the tie bar 140, a screw nut 182 held rotatably and immovably on the toggle support 130, and a mold thickness adjustment motor 183 that rotates the screw nut 182 screwed onto the screw shaft 181.

[0041] The screw shaft 181 and the screw nut 182 are provided for each tie bar 140. The rotational driving force of the mold thickness adjustment motor 183 may be transmitted to the multiple screw nuts 182 via a rotational driving force transmission unit 185. The multiple screw nuts 182 can be rotated synchronously. Note that by changing the transmission path of the rotational driving force transmission unit 185, it is also possible to rotate the multiple screw nuts 182 individually.

[0042] The rotational drive force transmission unit 185 is composed of, for example, gears. In this case, a driven gear is formed on the outer periphery of each screw nut 182, a drive gear is attached to the output shaft of the mold thickness adjustment motor 183, and an intermediate gear that meshes with the multiple driven gears and the drive gear is rotatably held in the center of the toggle support 130. Note that the rotational drive force transmission unit 185 may be composed of a belt, a pulley, or the like, instead of gears.

[0043] The operation of the mold thickness adjustment mechanism 180 is controlled by a control device 700. The control device 700 drives the mold thickness adjustment motor 183 to rotate the screw nut 182. As a result, the position of the toggle support 130 relative to the tie bar 140 is adjusted, and the interval L between the fixed platen 110 and the toggle support 130 is adjusted. Note that a plurality of mold thickness adjustment mechanisms may be used in combination.

[0044] The distance L is detected using a mold thickness adjustment motor encoder 184. The mold thickness adjustment motor encoder 184 detects the amount of rotation and the direction of rotation of the mold thickness adjustment motor 183, and sends a signal indicating the detection result to the control device 700. The detection result of the mold thickness adjustment motor encoder 184 is used to monitor and control the position of the toggle support 130 and the distance L. Note that the toggle support position detector that detects the position of the toggle support 130 and the distance detector that detects the distance L are not limited to the mold thickness adjustment motor encoder 184, and general types can be used.

[0045] The mold clamping apparatus 100 may have a mold temperature regulator that regulates the temperature of the mold apparatus 800. The mold apparatus 800 has a flow path for a temperature control medium therein. The mold temperature regulator regulates the temperature of the mold apparatus 800 by regulating the temperature of the temperature control medium supplied to the flow path of the mold apparatus 800.

[0046] Although the mold clamping apparatus 100 of this embodiment is of a horizontal type in which the mold opening and closing direction is horizontal, it may be of a vertical type in which the mold opening and closing direction is vertical.

[0047] Although the mold clamping apparatus 100 of the present embodiment has a mold clamping motor 160 as a drive source, it may have a hydraulic cylinder instead of the mold clamping motor 160. Also, the mold clamping apparatus 100 may have a linear motor for opening and closing the mold, and an electromagnet for mold clamping.

[0048] (Ejector device) In describing the ejector unit 200, similar to the description of the mold clamping unit 100, the direction of movement of the movable platen 120 during mold closing (e.g., the positive direction of the X-axis) will be referred to as the forward direction, and the direction of movement of the movable platen 120 during mold opening (e.g., the negative direction of the X-axis) will be referred to as the rearward direction.

[0049] The ejector unit 200 is attached to the movable platen 120 and moves forward and backward together with the movable platen 120. The ejector unit 200 has an ejector rod 210 that ejects a molded product from the mold device 800, and a drive mechanism 220 that moves the ejector rod 210 in the movement direction of the movable platen 120 (X-axis direction).

[0050] The ejector rod 210 is arranged so as to be able to move forward and backward in a through hole of the movable platen 120. The front end of the ejector rod 210 contacts an ejector plate 826 of the movable mold 820. The front end of the ejector rod 210 may or may not be connected to the ejector plate 826.

[0051] The drive mechanism 220 includes, for example, an ejector motor and a motion conversion mechanism that converts the rotational motion of the ejector motor into the linear motion of the ejector rod 210. The motion conversion mechanism includes a screw shaft and a screw nut that screws onto the screw shaft. A ball or roller may be interposed between the screw shaft and the screw nut.

[0052] The ejector unit 200 performs an ejection process under the control of the control unit 700. In the ejection process, the ejector rod 210 advances from the standby position to the ejection position at a set moving speed, thereby advancing the ejector plate 826 and ejecting the molded product. After that, the ejector motor is driven to move the ejector rod 210 backward at the set moving speed, and the ejector plate 826 backward to the original standby position.

[0053] The position and moving speed of the ejector rod 210 are detected, for example, by using an ejector motor encoder. The ejector motor encoder detects the rotation of the ejector motor and sends a signal indicating the detection result to the control device 700. Note that the ejector rod position detector that detects the position of the ejector rod 210 and the ejector rod moving speed detector that detects the moving speed of the ejector rod 210 are not limited to the ejector motor encoder, and general types can be used.

[0054] (injection device) In the description of the injection device 300, unlike the description of the mold clamping device 100 and the description of the ejector device 200, the movement direction of the screw 330 during filling (e.g., the negative X-axis direction) is described as the forward direction, and the movement direction of the screw 330 during metering (e.g., the positive X-axis direction) is described as the rearward direction.

[0055] The injection device 300 is installed on a slide base 301, and the slide base 301 is disposed so as to be movable forward and backward with respect to the injection device frame 920. The injection device 300 is disposed so as to be movable forward and backward with respect to the mold device 800. The injection device 300 touches the mold device 800, and fills the molding material measured in the cylinder 310 into a cavity space 801 in the mold device 800. The injection device 300 has, for example, a cylinder 310 for heating the molding material, a nozzle 320 provided at the front end of the cylinder 310, a screw 330 disposed in the cylinder 310 so as to be movable forward and backward and rotatable, a metering motor 340 for rotating the screw 330, an injection motor 350 for moving the screw 330 forward and backward, and a load detector 360 for detecting a load transmitted between the injection motor 350 and the screw 330.

[0056] Cylinder 310 heats the molding material supplied to the inside from supply port 311. The molding material includes, for example, resin. The molding material is formed, for example, in the shape of pellets, and is supplied to supply port 311 in a solid state. Supply port 311 is formed at the rear of cylinder 310. A cooler 312 such as a water-cooled cylinder is provided on the outer periphery of the rear of cylinder 310. A heater 313 such as a band heater and a temperature detector 314 are provided on the outer periphery of cylinder 310, forward of cooler 312.

[0057] Cylinder 310 is divided into a plurality of zones in the axial direction (e.g., X-axis direction) of cylinder 310. Each of the plurality of zones is provided with heater 313 and temperature detector 314. A set temperature is set for each of the plurality of zones, and control device 700 controls heater 313 so that the detected temperature of temperature detector 314 becomes the set temperature.

[0058] The nozzle 320 is provided at the front end of the cylinder 310, and is pressed against the mold device 800. A heater 313 and a temperature detector 314 are provided on the outer periphery of the nozzle 320. The control device 700 controls the heater 313 so that the detected temperature of the nozzle 320 becomes the set temperature.

[0059] The screw 330 is disposed in the cylinder 310 so as to be rotatable and movable forward and backward. When the screw 330 is rotated, the molding material is sent forward along the spiral groove of the screw 330. As the molding material is sent forward, it is gradually melted by heat from the cylinder 310. As the liquid molding material is sent forward of the screw 330 and accumulates in the front part of the cylinder 310, the screw 330 is moved backward. Thereafter, when the screw 330 is moved forward, the liquid molding material accumulated in front of the screw 330 is injected from the nozzle 320 and filled into the mold device 800.

[0060] A check ring 331 is attached to the front of the screw 330 so as to be movable back and forth as a check valve for preventing the backflow of molding material from the front to the rear of the screw 330 when the screw 330 is pushed forward.

[0061] When the screw 330 is moved forward, the backflow prevention ring 331 is pushed backward by the pressure of the molding material in front of the screw 330, and moves backward relatively to the screw 330 to a blocking position (see FIG. 2) where the flow path of the molding material is blocked. This prevents the molding material accumulated in front of the screw 330 from flowing backward.

[0062] On the other hand, when the screw 330 is rotated, the backflow prevention ring 331 is pushed forward by the pressure of the molding material sent forward along the spiral groove of the screw 330, and moves forward relatively to the screw 330 to an open position (see FIG. 1) where the flow path of the molding material is opened. As a result, the molding material is sent forward of the screw 330.

[0063] The backflow prevention ring 331 may be either a co-rotating type that rotates together with the screw 330 or a non-co-rotating type that does not rotate together with the screw 330.

[0064] The injection device 300 may have a drive source for moving the backflow prevention ring 331 back and forth between the open position and the closed position relative to the screw 330.

[0065] The metering motor 340 rotates the screw 330. The drive source for rotating the screw 330 is not limited to the metering motor 340, and may be, for example, a hydraulic pump.

[0066] The injection motor 350 advances and retreats the screw 330. A motion conversion mechanism that converts the rotational motion of the injection motor 350 into the linear motion of the screw 330 is provided between the injection motor 350 and the screw 330. The motion conversion mechanism has, for example, a screw shaft and a screw nut that screws onto the screw shaft. A ball or roller may be provided between the screw shaft and the screw nut. The drive source that advances and retreats the screw 330 is not limited to the injection motor 350, and may be, for example, a hydraulic cylinder.

[0067] The load detector 360 detects the load transmitted between the injection motor 350 and the screw 330. The detected load is converted into pressure by the control device 700. The load detector 360 is provided on a load transmission path between the injection motor 350 and the screw 330, and detects the load acting on the load detector 360.

[0068] The load detector 360 sends a signal of the detected load to the control device 700. The load detected by the load detector 360 is converted into pressure acting between the screw 330 and the molding material, and is used to control and monitor the pressure that the screw 330 receives from the molding material, the back pressure on the screw 330, the pressure that the screw 330 acts on the molding material, and the like.

[0069] The pressure detector for detecting the pressure of the molding material is not limited to the load detector 360, and a general detector may be used. For example, a nozzle pressure sensor or a mold internal pressure sensor may be used. The nozzle pressure sensor is installed in the nozzle 320. The mold internal pressure sensor is installed inside the mold device 800.

[0070] The injection device 300 performs a metering process, a filling process, a pressure holding process, and the like under the control of the control device 700. The filling process and the pressure holding process may be collectively referred to as the injection process.

[0071] In the metering process, the metering motor 340 is driven to rotate the screw 330 at a set rotation speed, and the molding material is sent forward along the spiral groove of the screw 330. As a result, the molding material is gradually melted. As the liquid molding material is sent forward of the screw 330 and accumulates at the front of the cylinder 310, the screw 330 is moved backward. The rotation speed of the screw 330 is detected, for example, by using a metering motor encoder 341. The metering motor encoder 341 detects the rotation of the metering motor 340 and sends a signal indicating the detection result to the control device 700. Note that the screw rotation speed detector that detects the rotation speed of the screw 330 is not limited to the metering motor encoder 341, and a general one can be used.

[0072] In the metering process, in order to restrict abrupt retraction of the screw 330, a set back pressure may be applied to the screw 330 by driving the injection motor 350. The back pressure on the screw 330 is detected, for example, by using a load detector 360. When the screw 330 retracts to the metering completion position and a predetermined amount of molding material is accumulated in front of the screw 330, the metering process is completed.

[0073] The position and rotation speed of the screw 330 in the metering process are set together as a series of setting conditions. For example, a metering start position, a rotation speed switching position, and a metering completion position are set. These positions are arranged in this order from the front to the rear, and represent the start and end points of the section in which the rotation speed is set. The rotation speed is set for each section. There may be one or more rotation speed switching positions. The rotation speed switching positions do not have to be set. In addition, a back pressure is set for each section.

[0074] In the filling step, the injection motor 350 is driven to move the screw 330 forward at a set moving speed, and the liquid molding material accumulated in front of the screw 330 is filled into the cavity space 801 in the mold device 800. The position and moving speed of the screw 330 are detected, for example, by using an injection motor encoder 351. The injection motor encoder 351 detects the rotation of the injection motor 350 and sends a signal indicating the detection result to the control device 700. When the position of the screw 330 reaches a set position, switching from the filling step to the pressure holding step (so-called V / P switching) is performed. The position where the V / P switching is performed is also called the V / P switching position. The set moving speed of the screw 330 may be changed depending on the position of the screw 330, time, etc.

[0075] The position and movement speed of the screw 330 in the filling process are set together as a series of setting conditions. For example, a filling start position (also called an "injection start position"), a movement speed switching position, and a V / P switching position are set. These positions are arranged in this order from the rear side to the front, and represent the start and end points of the section for which the movement speed is set. The movement speed is set for each section. There may be one or more movement speed switching positions. The movement speed switching positions do not have to be set.

[0076] An upper limit value for the pressure of the screw 330 is set for each section in which the moving speed of the screw 330 is set. The pressure of the screw 330 is detected by a load detector 360. When the pressure of the screw 330 is equal to or lower than the set pressure, the screw 330 is advanced at the set moving speed. On the other hand, when the pressure of the screw 330 exceeds the set pressure, the screw 330 is advanced at a moving speed slower than the set moving speed so that the pressure of the screw 330 is equal to or lower than the set pressure, for the purpose of protecting the mold.

[0077] After the position of the screw 330 reaches the V / P switching position in the filling process, the screw 330 may be temporarily stopped at the V / P switching position, and then the V / P switching may be performed. Immediately before the V / P switching, instead of stopping the screw 330, the screw 330 may be moved forward or backward at a slow speed. Furthermore, the screw position detector that detects the position of the screw 330 and the screw movement speed detector that detects the movement speed of the screw 330 are not limited to the injection motor encoder 351, and general detectors may be used.

[0078] In the holding pressure step, the injection motor 350 is driven to push the screw 330 forward, and the pressure of the molding material at the front end of the screw 330 (hereinafter also referred to as "holding pressure") is maintained at a set pressure, and the molding material remaining in the cylinder 310 is pushed toward the mold device 800. The molding material that is insufficient due to cooling contraction in the mold device 800 can be replenished. The holding pressure is detected, for example, by a load detector 360. The set value of the holding pressure may be changed depending on the elapsed time from the start of the holding pressure step. The holding pressure and the holding time for which the holding pressure is held in the holding pressure step may each be set multiple times, or may be set collectively as a series of setting conditions.

[0079] In the dwelling step, the molding material in the cavity space 801 in the mold device 800 is gradually cooled, and when the dwelling step is completed, the entrance to the cavity space 801 is blocked by the solidified molding material. This state is called a gate seal, and prevents the molding material from flowing back from the cavity space 801. After the dwelling step, the cooling step is started. In the cooling step, the molding material in the cavity space 801 is solidified. A measuring step may be performed during the cooling step in order to shorten the molding cycle time.

[0080] The injection device 300 of this embodiment is of an in-line screw type, but may be of a pre-plastication type or the like. A pre-plastication type injection device supplies molding material molten in a plasticization cylinder to an injection cylinder, and injects the molding material from the injection cylinder into a mold device. A screw is disposed in the plasticization cylinder so as to be rotatable but unable to move forward or backward, or a screw is disposed so as to be rotatable and able to move forward or backward. Meanwhile, a plunger is disposed in the injection cylinder so as to be able to move forward or backward.

[0081] Furthermore, the injection device 300 of this embodiment is a horizontal type in which the axial direction of the cylinder 310 is horizontal, but may be a vertical type in which the axial direction of the cylinder 310 is vertical. A mold clamping device to be combined with the vertical injection device 300 may be either a vertical type or a horizontal type. Similarly, a mold clamping device to be combined with the horizontal injection device 300 may be either a horizontal type or a vertical type.

[0082] (Mobile device) In the description of the moving device 400, similar to the description of the injection device 300, the moving direction of the screw 330 during filling (for example, the negative X-axis direction) is the front, and the moving direction of the screw 330 during metering (for example, the positive X-axis direction) is the rear.

[0083] The moving device 400 moves the injection device 300 forward and backward relative to the mold device 800. In addition, the moving device 400 presses the nozzle 320 against the mold device 800 to generate a nozzle touch pressure. The moving device 400 includes a hydraulic pump 410, a motor 420 as a drive source, a hydraulic cylinder 430 as a hydraulic actuator, and the like.

[0084] The hydraulic pump 410 has a first port 411 and a second port 412. The hydraulic pump 410 is a pump that can rotate in both directions, and by switching the rotation direction of the motor 420, it draws in hydraulic fluid (e.g., oil) from one of the first port 411 and the second port 412 and discharges it from the other, thereby generating hydraulic pressure. Note that the hydraulic pump 410 can also draw in hydraulic fluid from a tank and discharge the hydraulic fluid from one of the first port 411 and the second port 412.

[0085] The motor 420 operates the hydraulic pump 410. The motor 420 drives the hydraulic pump 410 with a rotational direction and rotational torque according to a control signal from the control device 700. The motor 420 may be an electric motor or an electric servo motor.

[0086] The hydraulic cylinder 430 has a cylinder body 431, a piston 432, and a piston rod 433. The cylinder body 431 is fixed to the injection device 300. The piston 432 divides the inside of the cylinder body 431 into a front chamber 435 as a first chamber and a rear chamber 436 as a second chamber. The piston rod 433 is fixed to the fixed platen 110.

[0087] A front chamber 435 of the hydraulic cylinder 430 is connected to a first port 411 of the hydraulic pump 410 via a first flow path 401. The hydraulic fluid discharged from the first port 411 is supplied to the front chamber 435 via the first flow path 401, thereby pushing the injection unit 300 forward. The injection unit 300 is moved forward, and the nozzle 320 is pressed against the fixed die 810. The front chamber 435 functions as a pressure chamber that generates a nozzle touch pressure of the nozzle 320 by the pressure of the hydraulic fluid supplied from the hydraulic pump 410.

[0088] On the other hand, the rear chamber 436 of the hydraulic cylinder 430 is connected to the second port 412 of the hydraulic pump 410 via the second flow path 402. The hydraulic fluid discharged from the second port 412 is supplied to the rear chamber 436 of the hydraulic cylinder 430 via the second flow path 402, thereby pushing the injection unit 300 backward. The injection unit 300 is moved backward, and the nozzle 320 is separated from the fixed mold 810.

[0089] In this embodiment, the moving device 400 includes the hydraulic cylinder 430, but the present invention is not limited to this. For example, instead of the hydraulic cylinder 430, an electric motor and a motion conversion mechanism that converts the rotational motion of the electric motor into the linear motion of the injection device 300 may be used.

[0090] (Control device) The control device 700 is composed of, for example, a computer, and has a CPU (Central Processing Unit) 701, a storage medium 702 such as a memory, an input interface 703, and an output interface 704 as shown in FIGS. 1 and 2. The control device 700 performs various controls by causing the CPU 701 to execute a program stored in the storage medium 702. The control device 700 also receives signals from the outside through the input interface 703, and transmits signals to the outside through the output interface 704. Furthermore, the control device 700 may transmit and receive information to and from an information processing device (for example, a personal computer) connected via a network through a communication interface (not shown).

[0091] The control device 700 repeatedly performs a metering process, a mold closing process, a pressure increase process, a mold clamping process, a filling process, a pressure holding process, a cooling process, a pressure release process, a mold opening process, and an ejection process, thereby repeatedly manufacturing a molded product. A series of operations for obtaining a molded product, for example, an operation from the start of a metering process to the start of the next metering process, is also called a "shot" or a "molding cycle." The time required for one shot is also called a "molding cycle time" or a "cycle time."

[0092] One molding cycle includes, for example, a metering process, a mold closing process, a pressure increase process, a mold clamping process, a filling process, a pressure holding process, a cooling process, a pressure release process, a mold opening process, and an ejection process, in this order. The order here refers to the order in which each process starts. The filling process, the pressure holding process, and the cooling process are performed during the mold clamping process. The start of the mold clamping process may coincide with the start of the filling process. The completion of the pressure release process coincides with the start of the mold opening process.

[0093] In addition, in order to shorten the molding cycle time, a plurality of processes may be performed simultaneously. For example, the metering process may be performed during the cooling process of the previous molding cycle, or during the mold clamping process. In this case, the mold closing process may be performed at the beginning of the molding cycle. The filling process may be started during the mold closing process. The ejection process may be started during the mold opening process. In the case where an opening / closing valve for opening and closing the flow path of the nozzle 320 is provided, the mold opening process may be started during the metering process. This is because even if the mold opening process is started during the metering process, the molding material will not leak from the nozzle 320 as long as the opening / closing valve closes the flow path of the nozzle 320.

[0094] Note that one molding cycle may include steps other than the metering step, mold closing step, pressure increase step, mold clamping step, filling step, pressure holding step, cooling step, depressurization step, mold opening step, and ejection step.

[0095] For example, after the dwelling step is completed, a pre-metering suck-back step may be performed in which the screw 330 is retracted to a preset metering start position before the metering step is started. This can reduce the pressure of the molding material accumulated in front of the screw 330 before the metering step starts, and can prevent the screw 330 from suddenly retracting at the start of the metering step.

[0096] Furthermore, after the metering step is completed, a post-metering suck-back step may be performed in which the screw 330 is moved back to a preset filling start position (also called the "injection start position") before the filling step is started. This can reduce the pressure of the molding material accumulated in front of the screw 330 before the filling step is started, and can prevent the molding material from leaking from the nozzle 320 before the filling step is started.

[0097] The control device 700 is connected to an operation device 750 that accepts input operations by a user and a display device 760 that displays a screen. The operation device 750 and the display device 760 may be configured, for example, by a touch panel 770 and may be integrated. The touch panel 770 as the display device 760 displays a screen under the control of the control device 700. For example, the screen of the touch panel 770 may display information such as the settings of the injection molding machine 10 and the current state of the injection molding machine 10. In addition, for example, an operation unit such as a button that accepts an input operation by a user and an input field may be displayed on the screen of the touch panel 770. The touch panel 770 as the operation device 750 detects an input operation on the screen by the user and outputs a signal corresponding to the input operation to the control device 700. Thereby, for example, the user can operate the operation unit provided on the screen while checking the information displayed on the screen to perform settings of the injection molding machine 10 (including input of a setting value). In addition, the user can operate the operation unit provided on the screen to perform an operation of the injection molding machine 10 corresponding to the operation unit. The operation of the injection molding machine 10 may be, for example, the operation (including stopping) of the clamping device 100, the ejector device 200, the injection device 300, the moving device 400, etc. The operation of the injection molding machine 10 may be the switching of a screen displayed on the touch panel 770 serving as the display device 760, etc.

[0098] In this embodiment, the operation device 750 and the display device 760 are described as being integrated as the touch panel 770, but they may be provided independently. Also, a plurality of operation devices 750 may be provided. The operation device 750 and the display device 760 are disposed on the operation side (Y-axis negative direction) of the mold clamping unit 100 (more specifically, the fixed platen 110).

[0099] (First embodiment) FIG. 3 is a diagram showing components of the control device 700 according to the first embodiment in the form of functional blocks. Each functional block shown in FIG. 3 is conceptual, and does not necessarily have to be physically configured as shown in the figure. All or a part of each functional block can be functionally or physically distributed and integrated in any unit. All or any part of each processing function performed by each functional block is realized by a program executed by a CPU 701. Alternatively, each functional block may be realized as hardware using wired logic. As shown in FIG. 3, the control device 700 includes a receiving unit 712, an output unit 713, and an update unit 714. In addition, the control device 700 includes a process correspondence information storage unit 711 in a storage medium 702.

[0100] The process correspondence information storage unit 711 stores information about items associated with processes. FIG. 4 is a diagram illustrating a table structure of the process correspondence information storage unit 711 according to this embodiment. As shown in FIG. 4, the process correspondence information storage unit 711 according to this embodiment stores information about items to be displayed when each process is selected in association with the process. The process correspondence information storage unit 711 shown in FIG. 4 is an example in which an item to be displayed is associated with each process. Furthermore, the process correspondence information storage unit 711 stores scale information for displaying the item as information about the item. In the process correspondence information storage unit 711 according to this embodiment, a maximum value and a minimum value to be displayed are associated with each item as scale information.

[0101] In this embodiment, an item is information that is displayed as waveform data (an example of display information) regarding a process, and is setting information that indicates the settings of the process, or information that indicates the performance values ​​detected in the process.

[0102] In the example shown in FIG. 4, in the process "start filling", items to be displayed when the process is selected are set. In the process "start filling", "item 1" is set to "injection speed setting", "item 2" is set to "injection speed detection", and "item 3" is set to "holding pressure setting". Although omitted in FIG. 4, items to be displayed when the process is selected are also set in each of "item 4" and "item 5". These pieces of information are assigned to the item columns of the channel column described later.

[0103] Furthermore, in the process corresponding information storage unit 711 according to this embodiment, scale information for displaying the item is associated with the item. For example, as the scale information of "injection speed setting" of "item 1", "maximum value (item 1)" is set to "100.00", and "minimum value (item 1)" is set to "-100.00". Similarly, maximum and minimum values ​​are set as scale information for "Ch-2" to "Ch-5". These pieces of information are assigned to the maximum value column and minimum value column of the channel column described later.

[0104] Returning to FIG. 3, the reception unit 712 receives a user's operation from the operation device 750 via the input interface 703 .

[0105] The output unit 713 outputs data such as a display screen to the display device 760. The output unit 713 according to this embodiment , shot For each step of the molding process by the output molding machine 10, a display screen including setting information set by the user in that step, or waveform data (one example of display information) showing a waveform of a change due to an actual value in that step is output to the display device 760. Note that, in this embodiment, an example of outputting a display screen or the like to the display device 760 will be described, but the output destination of data is not limited to the display device 760. For example, the output unit 713 may output data such as a display screen to an information processing device connected via a network.

[0106] Fig. 5 is a diagram illustrating a display screen output by the output unit 713 of this embodiment. As shown in Fig. 5, the display screen 1500 shows an X-axis unit field 1501, a Y-axis unit field 1502, a left slider 1503, a right slider 1504, an X-axis field 1505, and a trigger (CH1-5) field 1506. Furthermore, the display screen 1500 shows five channel fields (a first channel field 1511 to a fifth channel field 1515), a selection range display field 1521, and a waveform data field 1550. In this embodiment, the channel field is a field for selecting an item to be displayed.

[0107] 5 displays settings for each shot of the injection molding machine 10 and performance values ​​detected by various sensors. The display screen of this embodiment can also display the performance values ​​of the current shot in real time.

[0108] 5 accepts a selection operation or an input operation for the above-mentioned columns via the operation device 750. Then, the output unit 713 switches a display screen (for example, the waveform data column 1550) displayed on the display device 760 in response to the accepted selection operation or input operation.

[0109] For example, the receiving unit 712 receives a selection operation via the operation device 750 for the X-axis unit column 1501, the Y-axis unit column 1502, and the X-axis column 1505. The output unit 713 switches the waveform data column 1550 to be displayed in response to the received selection operation.

[0110] The X-axis unit field 1501 is a field for selecting a unit to be displayed on the X-axis of the waveform data field 1550. The Y-axis unit field 1502 is a field for selecting a unit to be displayed on the Y-axis of the waveform data field 1550. In the Y-axis unit field 1502, for example, "percent" or "engineering unit" can be selected. The X-axis field 1505 is a field for setting the range of the X-axis (e.g., time) to be displayed in the waveform data field 1550.

[0111] The left slider 1503 is a field for setting the left end (display start position) on the X axis of the waveform data field 1550 in order to set the range to be displayed in the selection range display field 1521. The right slider 1504 is a field for setting the right end (display end position) on the X axis of the waveform data field 1550 in order to set the range to be displayed in the selection range display field 1521.

[0112] The trigger (CH1-5) column 1506 is a column for selecting a process to be displayed in the waveform data column 1550. The trigger (CH1-5) column 1506 according to this embodiment is, for example, in a menu format, and the user performs an operation via the operation device 750 to select a process to be displayed from the menu displayed in the trigger (CH1-5) column 1506.

[0113] In Fig. 5, it is assumed that "start filling" is selected (set) in the trigger (CH1-5) field 1506. In the example shown in Fig. 5, the output unit 713 outputs a display screen showing a waveform data field 1550 including waveform data of each item set in five channel fields (first channel field 1511 to fifth channel field 1515) in the process "start filling".

[0114] The five channel columns (first channel column 1511 to fifth channel column 1515) are columns for selecting items to be displayed as waveform data in the waveform data column 1550. That is, in this embodiment, five pieces of waveform data relating to the items assigned to each channel can be displayed in the waveform data column 1550.

[0115] The first channel column 1511 is a column for setting items for Ch-1. An item to be displayed is set in the item column 1511A, a maximum value (an example of scale information) to be displayed as waveform data for the item for Ch-1 is set in the maximum value column 1511B, and a minimum value (an example of scale information) to be displayed as waveform data for the item for Ch-1 is set in the minimum value column 1511C.

[0116] When item column 1511A is pressed via operation device 750 (for example, touch panel 770), output unit 713 outputs a menu screen displaying a plurality of items. Then, reception unit 712 receives a selection of an item to be set for Ch-1 from the menu screen. The same applies to item columns 1512A to 1515A, and description thereof will be omitted.

[0117] Maximum value column 1511B and minimum value column 1511C are columns into which a numerical value can be input. Then, reception unit 712 receives input of a numerical value set in maximum value column 1511B or minimum value column 1511C via operation device 750. Note that maximum value columns 1512B to 1515B and minimum value columns 15112C to 1515C are similarly configured, and description thereof will be omitted.

[0118] Each channel column can be set to "ON" or "OFF." "ON" indicates that the waveform data for that item is displayed, and "OFF" indicates that the waveform data for that item is not displayed.

[0119] 5, an example is shown in which "injection speed setting" is set in the item field 1511A, "100.00" is set in the maximum value field 1511B, and "-100.00" is set in the minimum value field 1511C. "Injection speed setting" indicates the setting of the injection speed of the screw 330 set by the user.

[0120] The second channel column 1512 is a column for setting items for Ch-2. An item to be displayed is set in the item column 1512A, a maximum value (an example of scale information) displayed as waveform data for the Ch-2 item is set in the maximum value column 1512B, and a minimum value (an example of scale information) displayed as waveform data for the Ch-2 item is set in the minimum value column 1512C.

[0121] 5, an example is shown in which "injection speed detection" is set in the item field 1512A, "100.00" is set in the maximum value field 1512B, and "-100.00" is set in the minimum value field 1512C. "Injection speed detection" indicates the injection speed of the screw 330 detected by the injection motor encoder 351.

[0122] The third channel column 1513 is a column for setting items for Ch-3. An item to be displayed is set in the item column 1513A, a maximum value (an example of scale information) to be displayed as waveform data for the item for Ch-3 is set in the maximum value column 1513B, and a minimum value (an example of scale information) to be displayed as waveform data for the item for Ch-3 is set in the minimum value column 1513C.

[0123] 5, an example is shown in which "holding pressure setting" is set in item field 1513A, "200.00" is set in maximum value field 1513B, and "0.00" is set in minimum value field 1513C. "Holding pressure setting" indicates the value of the holding pressure set by the user.

[0124] The fourth channel column 1514 is a column for setting items for Ch-4. An item to be displayed is set in the item column 1514A, a maximum value (an example of scale information) to be displayed as waveform data for the item of Ch-4 is set in the maximum value column 1514B, and a minimum value (an example of scale information) to be displayed as waveform data for the item of Ch-4 is set in the minimum value column 1514C.

[0125] 5, the item field 1514A is set to "holding pressure detection," the maximum value field 1514B is set to "200.00," and the minimum value field 1514C is set to "0.00." "Holding pressure detection" indicates the value of the holding pressure detected by the load detector 360.

[0126] The fifth channel column 1515 is a column for setting an item for Ch-5. An item to be displayed is set in the item column 1515A, a maximum value (an example of scale information) to be displayed as waveform data for the Ch-5 item is set in the maximum value column 1515B, and a minimum value column 1515C is set to a maximum value (an example of scale information) to be displayed as waveform data for the Ch-5 item. A minimum value (an example of scale information) is set.

[0127] 5, the item field 1515A is set to "screw position detection", the maximum value field 1515B is set to "100.00", and the minimum value field 1515C is set to "0.00". "Screw position detection" indicates the position of the screw 330 detected by the injection motor encoder 351.

[0128] The waveform data column 1550 in FIG. 5 is a column that displays waveform data that shows, in waveform, the setting information or changes in the actual values ​​indicated by the items set in each of the five channel columns (first channel column 1511 to fifth channel column 1515) in the process selected in the trigger (CH1-5) column 1506.

[0129] Waveform data 1551 in the waveform data column 1550 indicates changes in the setting information of the "injection speed setting" set in the first channel column 1511 (Ch-1).

[0130] The maximum value of the waveform data field 1550 for displaying the waveform data 1551 is the value set in the maximum value field 1511B, and the minimum value of the waveform data field 1550 for displaying the waveform data 1551 is the value set in the minimum value field 1511C. Set to The maximum and minimum values ​​of the waveform data displayed in the waveform data field 1550 are the same in the following cases, and a description thereof will be omitted.

[0131] Waveform data 1552 indicates a change in the detection result (an example of a performance value) of the "injection speed detection" set in the second channel column 1512 (Ch-2).

[0132] Waveform data 1553 shows a change in the setting information of "Pressure holding setting" set in the third channel field 1513 (Ch-3). Waveform data 1554 shows a change in the detection result (an example of an actual value) of "Pressure holding detection" set in the fourth channel field 1514 (Ch-4).

[0133] Waveform data 1555 indicates a change in the detection result (an example of a performance value) of the "screw position detection" set in the fifth channel column 1515 (Ch-5).

[0134] Then, the receiving unit 712 according to this embodiment receives the selection of an item for each of the item columns 1511A to 1515A of the channel columns as information to be displayed for the process selected in the trigger (CH1-5) column 1506.

[0135] When the receiving unit 712 receives the selection of an item, the output unit 713 displays in the waveform data field 1550 waveform data indicating a change in the setting information or detection result of the selected item.

[0136] The receiving unit 712 also receives, via the operation device 750, numerical input operations for the left slider 1503 (the start value on the left side of the X-axis of the waveform data field 1550) and the right slider 1504 (the end value on the right side of the X-axis of the waveform data field 1550).

[0137] The selection range display field 1521 is a field that displays, in a list, the statistical values, start values, end values, etc. for each item set in each channel field within the range set by the left slider 1503 and the right slider 1504.

[0138] 5, the statistical values ​​of the items set for each channel (Ch-1 to Ch-5), such as the start value at the left end (Left), the maximum value within the range (Max), the integral value within the range (Int), the average value within the range (Ave), the minimum value within the range (Min), and the end value at the right end (Right), are displayed. Note that the statistical values ​​for each item displayed in the selection range display field 1521 are shown as an example, and other statistical values ​​may be displayed.

[0139] The trigger (CH1-5) column 1506 is a column for selecting a process to be displayed in the waveform data column 1550. The trigger (CH1-5) column 1506 according to this embodiment is in a menu format. The reception unit 712 receives, via the operation device 750, an operation to select a process to be displayed from among a plurality of processes shown on the menu screen.

[0140] When the output unit 713 of this embodiment receives an operation to select a process, it outputs a display screen in which the waveform data of the items selected in the item columns 1511A to 1515A in the process set in the trigger (CH1-5) column 1506 is displayed in the waveform data column 1550.

[0141] In the example shown in Fig. 5, "start filling" is selected (set) in the trigger (CH1-5) column 1506. In the example shown in Fig. 5, the output unit 713 outputs the waveform data of each item set in the five channel columns (first channel column 1511 to fifth channel column 1515) in the "start filling" process to a display screen shown in a waveform data column 1550.

[0142] After the process displayed on the display screen is changed, the user needs to select an item to be displayed from item columns 1511A to 1515A in order to display the desired waveform data. Such a selection operation places a heavy operational burden on the user. Therefore, the control device 700 according to this embodiment is capable of automatically switching the item associated with the process in response to a user request when the reception unit 712 receives a process selection operation.

[0143] FIG. 6 is a diagram showing a pop-up screen output by the output unit 713 when a change operation to the process in the trigger (CH1-5) column 1506 is accepted.

[0144] When the receiving unit 712 receives a selection of a process, the output unit 713 according to this embodiment outputs a pop-up screen (an example of inquiry display information) inquiring whether to switch to an item previously associated with the selected process. In the example shown in Fig. 6, after the receiving unit 712 receives a selection operation of the process "start mold closing" set in the trigger (CH1-5) column 1611, the output unit 713 displays the pop-up screen 1600.

[0145] In this embodiment, an example of switching from the process "start filling" to the process "start mold closing" will be described. Note that the process of switching to another process is the same as the process of switching from the process "start filling" to the process "start mold closing", so the description will be omitted.

[0146] The pop-up screen 1600 displays a "Yes" button 1601 and a "No" button 1602.

[0147] When the reception unit 712 receives a selection operation of the "No" button 1602, the output unit 713 does not change the items set in the five channel columns (the first channel column 1511 to the fifth channel column 1515). In other words, the output unit 713 outputs a display screen including a waveform data column showing the waveform data of the changed process "mold closing start" with the items already set at the time of the process "filling start" before the change.

[0148] On the other hand, when the receiving unit 712 receives a selection operation of the "Yes" button 1601, the output unit 713 switches each of the five channel columns (first channel column 1511 to fifth channel column 1515) to an item associated with the process "start of mold closing", and outputs a display screen including a waveform data column showing the waveform data for each item for the changed process "start of mold closing".

[0149] The items associated with the process "start of mold closing" are stored in the process correspondence information storage unit 711. Therefore, the output unit 713 can set the items associated with the process in advance by reading out the items associated with the process "start of mold closing" with reference to the process correspondence information storage unit 711.

[0150] In other words, when the receiving unit 712 receives a selection to automatically switch items, the output unit 713 outputs a display screen including waveform data of the items that are pre-associated in the process corresponding to the process for which the selection was received in the process correspondence information storage unit 711.

[0151] Fig. 7 is a diagram illustrating a display screen output by the output unit 713 of this embodiment. In the display screen 1700 shown in Fig. 7, the same reference numerals are assigned to the same fields as those in the display screen 1500 of Fig. 5, and the description thereof will be omitted.

[0152] In the example shown in FIG. 7, the trigger (CH1-5) column 1611, the five channel columns (first channel column 1711 to fifth channel column 1715), the selection range display column 1721, and the waveform data column 1750 have been updated.

[0153] 7, the process "measurement start" selected by the user is displayed in the trigger (CH1-5) column 1506. The five channel columns (first channel column 1711 to fifth channel column 1715) are switched to items that are previously associated with the process "mold closing start."

[0154] In this example, the item field 1711A is set to “rotation setting”, the maximum value field 1711B is set to “100.00”, and the minimum value field 1711C is set to “−100.00”. The “rotation setting” indicates the setting of the rotation speed of the screw 330.

[0155] In this example, "rotation detection" is set in the item field 1712A, "100.00" is set in the maximum value field 1712B, and "-100.00" is set in the minimum value field 1712C. "Rotation detection" indicates the rotation speed of the screw 330 detected by the metering motor encoder 341.

[0156] In this example, the item field 1713A is set to “back pressure setting”, the maximum value field 1713B is set to “25.00”, and the minimum value field 1713C is set to “0.00”. The “back pressure setting” indicates the back pressure setting for the screw 330.

[0157] In this example, the item field 1714A is set to “detected back pressure”, the maximum value field 1714B is set to “25.00”, and the minimum value field 1714C is set to “0.00”. “Detected back pressure” indicates the back pressure of the screw 330 detected by the load detector 360.

[0158] In this example, "screw position detection" is set in the item field 1715A, "100.00" is set in the maximum value field 1715B, and "0.00" is set in the minimum value field 1715C. "Screw position detection" indicates the position of the screw 330 detected by the injection motor encoder 351.

[0159] The waveform data column 1750 in FIG. 7 is a column that displays waveform data (an example of waveform information) that shows, in waveform, the setting information or changes in the actual values ​​indicated by the items set in each of the five channel columns (first channel column 1711 to fifth channel column 1715) in the process “start of measurement” changed in the trigger (CH1-5) column 1611.

[0160] Waveform data 1751 in the waveform data column 1750 indicates the setting information of the "rotation setting" set in the first channel column 1711 (Ch-1). Waveform data 1752 indicates the change in the detection result (an example of the actual value) of the "rotation detection" set in the second channel column 1712 (Ch-2).

[0161] Waveform data 1753 indicates the setting information of "back pressure setting" set in the third channel field 1713 (Ch-3). Waveform data 1754 indicates the change in the detection result (an example of the actual value) of "back pressure detection" set in the fourth channel field 1714 (Ch-4).

[0162] Waveform data 1755 indicates a change in the detection result (an example of a performance value) of the "screw position detection" set in the fifth channel column 1715 (Ch-5).

[0163] The selection range display field 1721 displays the starting value at the left end (Left), the maximum value within the range (Max), the integral value within the range (Int), the average value within the range (Ave), the minimum value within the range (Min), and the ending value at the right end (Right) for the items set for each channel (Ch-1 to Ch-5).

[0164] 7, when the "Yes" button 1601 in Fig. 6 is pressed, the output unit 713 reads out information about the item associated with the process "measurement start" from the process corresponding information storage unit 711. The information about the item includes information for identifying the "item" (for example, name) as well as scale information (maximum and minimum values ​​displayed in the waveform data column 1750), but other information may also be read out.

[0165] 7 based on the information on the read items, the setting information for each item stored in the storage medium 702, and the performance values ​​for the items received from the various sensors, and outputs the display screen shown in Fig. 7. Note that, although the present embodiment has been described with reference to an example in which items are automatically switched based on the information stored in the process corresponding information storage unit 711, other aspects may be used.

[0166] As a result, when the receiving unit 712 receives the selection of a process, the output unit 713 in this embodiment outputs to the display device 760 a display screen including waveform data showing, in waveform form, the setting information or the change in the actual value indicated by an item that is pre-associated with the process that has been selected, among a plurality of items that can receive selection.

[0167] In addition, when displaying waveform data for each item, the output unit 713 outputs a display screen showing the waveform data according to scale information (maximum value on the Y-axis, minimum value on the Y-axis) previously stored in the process corresponding information storage unit 711 as the range of setting information or actual values ​​to be displayed for that item.

[0168] Furthermore, in the control device 700 of this embodiment, the items previously associated with the processes can be changed.

[0169] The update unit 714 updates the items previously associated with the process in accordance with the operation received by the operation device 750 .

[0170] For example, the accepting unit 712 accepts an operation to change an item previously associated with a process. Then, the updating unit 714 updates the item previously associated with the process to be changed in the process correspondence information storage unit 711.

[0171] As described above, when the receiving unit 712 receives the selection of a process, the output unit 713 outputs a display screen including waveform data of an item that is previously associated with the process in the process correspondence information storage unit 711. This enables the output unit 713 to output a display screen that includes waveform data of an item that is previously associated with the process, which has been changed based on an operation.

[0172] Next, a process procedure performed when a process selection is accepted in the control device 700 according to the first embodiment will be described. Fig. 8 is a flowchart showing the control performed when a process selection is accepted in the control device 700 according to the first embodiment.

[0173] First, the output unit 713 of the control device 700 outputs to the display device 760 a display screen including a waveform data column showing waveform data for each item in an arbitrary process (S1801).

[0174] Next, the reception unit 712 determines whether or not a selection operation for the process indicated in the trigger (CH1-5) field has been received from the operation device 750 (S1802). If it is determined that a selection operation has not been received (S1802: No), the process of S1802 is repeated.

[0175] On the other hand, if the receiving unit 712 determines that the process selection operation has been received (S1802: Yes), the output unit 713 outputs a pop-up screen for confirming whether or not to automatically switch (S1803).

[0176] Next, the accepting unit 712 determines whether or not a selection to automatically switch items has been accepted on a pop-up screen (for example, the pop-up screen 1600 shown in FIG. 6) (S1804).

[0177] If the accepting unit 712 determines that the selection to automatically switch items has not been accepted (the "No" button 1602 has been pressed) (S1804: No), the output unit 713 outputs a display screen including a waveform data column showing the waveform data for each item in the selected process without switching the items (S1805).

[0178] On the other hand, if the receiving unit 712 determines that it has received a selection to automatically switch items (the "Yes" button 1601 has been pressed) (1804: Yes), the output unit 713 switches to the item associated with the selected process and outputs a display screen including a waveform data column showing the waveform data of each switched item in the selected process (S1806).

[0179] When the control device 700 according to this embodiment selects to automatically switch items on the pop-up screen that is displayed when a process selection operation is received, the control device 700 displays waveform data of items associated with the process for which the selection operation is received. In other words, when the control device 700 receives a process selection operation from the user, the control device 700 automatically sets items corresponding to the process, eliminating the need for the user to manually set items, thereby reducing the operational burden on the user.

[0180] Furthermore, when the control device 700 according to the present embodiment receives a process selection operation from the user, it automatically sets the items corresponding to the process, so that the time required to set the items suitable for the process can be reduced. Therefore, the user can reduce the time required to grasp the status of the process.

[0181] Second Embodiment In the above-mentioned embodiment, an example in which waveform data related to one process is displayed on the display screen has been described. However, the control device 700 is not limited to the above-mentioned display mode. Therefore, in the second embodiment, an example in which a waveform data column is displayed in a different area for each of a plurality of processes will be described. Note that the configuration of the control device 700 in the second embodiment is the same as that in the first embodiment, and therefore the description thereof will be omitted.

[0182] When the receiving unit 712 receives an operation to display two processes, the output unit 713 according to this embodiment outputs a display screen in which waveform data columns for two processes are arranged in different regions.

[0183] On the display screen of this embodiment, when multiple processes are displayed, it is possible to display two processes in the same or adjacent cycles. For example, by simultaneously displaying waveform data showing the detection result of "metering start" and waveform data showing the detection result of "filling start", the user can confirm what kind of injection will be performed based on the resin metering result. In this way, by the control device 700 according to this embodiment displaying multiple processes, the user can understand how the processing of an arbitrary process affects other processes.

[0184] Fig. 9 is a diagram illustrating a display screen output by the output unit 713 of this embodiment. As shown in Fig. 9, a display screen 1900 displays a waveform data field 1930 for the process "start filling" and a waveform data field 1950 for the process "start closing".

[0185] Display screen 1900 shows a first process (e.g., "start filling") trigger (CH1-5) column 1921, and an X-axis column 1922. Display screen 1900 further shows five channel columns (first channel column 1911 to fifth channel column 1915) for the first process (e.g., "start filling"), and a waveform data column 1930.

[0186] The five channel columns (first channel column 1911 to fifth channel column 1915) are similar to the channel columns (first channel column 1511 to fifth channel column 1515) shown in FIG. 5 of the first embodiment, and a description thereof will be omitted.

[0187] The waveform data 1931 to 1935 shown in the waveform data column 1930 indicates changes in the setting information or changes in the performance values ​​of each item shown in the first channel column 1511 to the fifth channel column 1515, similar to the waveform data column 1550 in the first embodiment.

[0188] Display screen 1900 shows a trigger (CH6-10) column 1941 for the second process (e.g., "start of mold closing") and an X-axis column 1942. Display screen 1900 further shows five channel columns (a sixth channel column 1916 to a tenth channel column 1920) for the second process (e.g., "start of mold closing") and a waveform data column 1950.

[0189] The process "mold closing start" is displayed in a trigger (CH6-10) column 1941. Items corresponding to the "mold closing start" process are set in the five channel columns (a sixth channel column 1916 to a tenth channel column 1920).

[0190] In this example, "mold clamping position detection" is set in the item field 1916A, "25.00" is set in the maximum value field 1916B, and "0.00" is set in the minimum value field 1916C. "Mold clamping position detection" indicates the position of the movable platen 120 converted from the position of the crosshead 151 detected by the mold clamping motor encoder 161.

[0191] In this example, "mold clamping speed detection" is set in the item field 1917A, "300.00" is set in the maximum value field 1917B, and "-100.00" is set in the minimum value field 1917C. "Injection speed detection" indicates the speed of the crosshead 151 detected by the mold clamping motor encoder 161.

[0192] In this example, "mold clamping force detection" is set in the item field 1918A, "200.00" is set in the maximum value field 1918B, and "0.00" is set in the minimum value field 1918C. "Mold clamping force detection" indicates the mold clamping force detected by the tie bar strain detector 141.

[0193] In this example, "clamping torque detection" is set in the item field 1919A, "25.00" is set in the maximum value field 1919B, and "-25.00" is set in the minimum value field 1914C. "Clamping torque detection" is indicated by the value of current supplied to the clamping motor 160. The current value may be detected by a current detector, or may be obtained from a control command value for an inverter that supplies current to the clamping motor 160.

[0194] In this example, "screw position detection" is set in the item field 1920A, "100.00" is set in the maximum value field 1920B, and "0.00" is set in the minimum value field 1920C. "Screw position detection" indicates the position of the screw 330 detected by the injection motor encoder 351.

[0195] The waveform data column 1950 in FIG. 9 is a column that displays waveform data showing, in waveform, the change in the setting information or actual value indicated by the items set in each of the five channel columns (the sixth channel column 1916 to the tenth channel column 1920) in the process “start of mold closing” set in the trigger (CH6-10) column 1941.

[0196] Waveform data 1951 in the waveform data field 1950 indicates a change in the detection result (an example of an actual value) of the "mold clamping position detection" set in the sixth channel field 1916. Waveform data 1952 indicates a change in the detection result (an example of an actual value) of the "mold clamping speed detection" set in the seventh channel field 1917.

[0197] Waveform data 1953 shows a change in the detection result (an example of an actual value) of the "mold clamping force detection" set in the eighth channel field 1918. Waveform data 1954 shows a change in the detection result (an example of an actual value) of the "mold clamping torque detection" set in the fourth channel field 1714.

[0198] Waveform data 1955 indicates a change in the detection result (an example of a performance value) of the “screw position detection” set in the tenth channel field 1920 .

[0199] When the receiving unit 712 receives an operation to change a process for either the trigger (CH1-5) column 1921 or the trigger (CH6-10) column 1941, the output unit 713 displays the waveform data of the items set in the item columns (item columns 1911A-1915A or item columns 1916A-1920A) for the process for which the change was received in the waveform data column (waveform data column 1930 or waveform data column 1950). At that time, the items may be automatically switched to those set in the item columns (item columns 1911A-1915A or item columns 1916A-1920A) as in the first embodiment.

[0200] Fig. 10 is a diagram showing a pop-up screen output by the output unit 713 when an operation to change the process is received in the trigger (CH6-10) field 2021. In the example shown in Fig. 10, an operation to change the process from "start mold closing" to "start measurement" is received in the trigger (CH6-10) field 2021 shown below.

[0201] As shown in FIG. 10, when the receiving unit 712 receives a selection of a process, the output unit 713 according to this embodiment outputs a pop-up screen (an example of display information) 2010 inquiring whether or not to switch to an item that is pre-associated with the process whose selection has been received.

[0202] In the pop-up screen 2010, a "Yes" button 2011 and a "No" button 2012 are displayed.

[0203] When the reception unit 712 receives a selection operation of the "No" button 2012, the output unit 713 does not switch the items set in the five channel columns (the sixth channel column 1916 to the tenth channel column 1920).

[0204] On the other hand, when the receiving unit 712 receives a selection operation of the "Yes" button 2011, the output unit 713 switches each of the five channel columns (the sixth channel column 1916 to the tenth channel column 1920) to an item associated with the process "start of weighing", and outputs a display screen including a waveform data column 1950 in which waveform data is displayed for each switched item at the time of the changed process "start of weighing".

[0205] Fig. 11 is a diagram illustrating a display screen output by the output unit 713 of this embodiment. In a display screen 2100 shown in Fig. 11, the same reference numerals are assigned to the same fields as in the display screen 1900 of Fig. 9, and the description thereof will be omitted.

[0206] Fig. 11 shows an example of a display screen after automatically switching to an item corresponding to a process when a process selection operation is accepted. As shown in Fig. 11, a display screen 2100 shows a waveform data field 1930 for the process "start filling" and a waveform data field 2150 for the process "start measuring".

[0207] Display screen 2100 shows a first process (e.g., "start filling") trigger (CH1-5) column 1921, and an X-axis column 1922. Five channel columns (first channel column 1911 to fifth channel column 1915) for the first process (e.g., "start filling") and a waveform data column 1930 are shown.

[0208] In the example shown in FIG. 11, compared to FIG. 9, the trigger (CH6-10) column 2021, the five channel columns (the sixth channel column 2116 to the tenth channel column 2120), and the waveform data column 2150 have been updated.

[0209] 11, the updated process "Start metering" is displayed in the trigger (CH6-10) column 2121. Items corresponding to the "Start metering" process are set in the five channel columns (the sixth channel column 2116 to the tenth channel column 2120) by the processing of the output unit 713. Note that the items set in the sixth channel column 2116 to the tenth channel column 2120 are the same as those shown in FIG. 7, so a description thereof will be omitted.

[0210] 11 is a column that displays waveform data showing, in waveform form, the change in the setting information or the actual value indicated by the items set in each of the five channel columns (the sixth channel column 2116 to the tenth channel column 2120) in the process "measurement start" changed in the trigger (CH6-10) column 2121. The waveform data column 2150 in Fig. 11 is similar to the waveform data column 1750 shown in Fig. 7, and therefore a description thereof will be omitted.

[0211] In this manner, when the receiving unit 712 receives the selection of a process, the output unit 713 in this embodiment outputs to the display device 760 a display screen including waveform data showing, in waveform form, the setting information or the change in the actual value indicated by an item that is pre-associated with the process whose selection has been received, from among a plurality of items that can receive selection.

[0212] In addition, when displaying waveform data for each item, the output unit 713 outputs a display screen showing the waveform data according to scale information (maximum value on the Y-axis, minimum value on the Y-axis) previously stored in the process corresponding information storage unit 711 as the range of setting information or actual values ​​to be displayed for that item.

[0213] Next, a process procedure performed when a process selection is accepted in the control device 700 according to the second embodiment will be described. Fig. 12 is a flowchart showing the control performed when a process selection is accepted in the control device 700 according to the second embodiment.

[0214] First, the output unit 713 of the control device 700 outputs to the display device 760 a display screen including a waveform data column showing the waveform data of each item for each of the two processes (S2201).

[0215] Next, the reception unit 712 determines whether or not a selection operation for a process in one of the trigger (CH1-5) columns among the multiple processes has been received from the operation device 750 (S2202). If it is determined that a selection operation has not been received (S2202: No), the process of S2202 is repeated again.

[0216] On the other hand, if the receiving unit 712 determines that the process selection operation has been received (S2202: Yes), the output unit 713 outputs (displays) a pop-up screen for confirming whether or not to automatically switch (S2203).

[0217] Next, the accepting unit 712 determines whether or not a selection to automatically switch items has been accepted on a pop-up screen (for example, the pop-up screen 2010 shown in FIG. 10) (S2204).

[0218] If the receiving unit 712 determines that the selection to automatically switch items has not been received (the "No" button 2012 has been pressed) (S2204: No), the output unit 713 outputs a display screen including a waveform data column showing the waveform data for each item for each of the two processes including the selected process without switching the items (S2205).

[0219] On the other hand, if the receiving unit 712 determines that it has received a selection to automatically switch items (the "Yes" button 2011 has been pressed) (S2204: Yes), the output unit 713 switches to the item associated with the selected process and outputs a display screen (for example, the display screen shown in FIG. 11) including a waveform data column showing the waveform data of each item for each of the two processes including the selected process (S2206).

[0220] When output unit 713 switches the items, if there are five items associated with a process, it switches all of the items. However, if there are four or fewer items associated with a process, output unit 713 switches only the four or fewer items, and the other items remain unchanged. In this case, output unit 713 may update the "on" displayed in the channel column to "off," and may also prevent the waveform data from being displayed in the waveform data column.

[0221] The control device 700 according to this embodiment displays a display screen including a waveform data column for each of the two processes. The display screen according to this embodiment is not limited to a mode in which waveform data columns are displayed for different processes, and may display multiple waveform data columns for the same process. In addition, when multiple waveform data columns are displayed for the same process, the items displayed in each waveform data column may be the same or different.

[0222] According to this embodiment, the waveform data columns for two processes can be displayed, so that the user can easily visually compare the waveform data between the two processes. This comparison makes it possible to check, for example, how the settings and results of a given process affect other processes. By performing this check, the appropriate settings for each process can be identified, which can improve the quality of molded products.

[0223] In the above-described embodiment, a display screen that allows the selection of items is displayed. This allows the user to easily recognize the status of each process by selecting the item that the user wants to check. When a process change operation is performed on such a display screen, if the user must set all items, the operational burden becomes large. In contrast, in the above-described embodiment, the operational burden on the user to set items appropriate for the process can be reduced by automatically switching to the item associated with the process.

[0224] When displaying waveform data in a waveform data field included in a display screen, the scale information to be displayed differs for each item. Therefore, if the scale information is made user-configurable, the user will need to set the scale information for each item, which increases the operational burden.

[0225] In contrast, in the above-described embodiment, scale information is held for each item associated with a process. In addition, in the above-described embodiment, when an item is automatically switched, scale information (e.g., the maximum value of the Y-axis and the minimum value of the Y-axis) corresponding to the item is set. This allows waveform data corresponding to the item to be displayed without the user having to change the scale information, thereby improving visibility and reducing the operational burden on the user.

[0226] In addition, when a process change operation is performed, a pop-up screen is displayed to confirm whether or not to automatically switch to the item associated with the process. This allows the user to select whether or not to automatically switch items, making it possible to display items according to the situation, thereby reducing the operational burden on the user.

[0227] In the above-described embodiment, an example of displaying waveform data as an example of display information that represents changes in setting information or performance values ​​based on items in a graph has been described. However, the above-described embodiment is not limited to displaying waveform data, and any display that represents changes in setting information or performance values ​​in a graph that is visible to the user may be used.

[0228] Although the embodiment of the injection molding machine according to the present invention has been described above, the present invention is not limited to the above embodiment. Various changes, modifications, substitutions, additions, deletions, and combinations are possible within the scope of the claims. Naturally, these also fall within the technical scope of the present invention. [Explanation of symbols]

[0229] 10 injection molding machine 700 Control device 711 Process Corresponding Information Storage Unit 712 Reception Department 713 Output section 714 Update Department

Claims

1. a reception unit that receives a selection of an injection molding process and a selection of setting information indicating settings of the process or an item indicating a performance value detected in the process; an output unit that outputs, when the reception unit receives a selection of the process, to a display device, display information that represents, in a graph, the setting information or the change in the performance value based on the item that is previously associated with the process that has been selected; A control device for an injection molding machine having the above-mentioned.

2. the output unit outputs the display information according to scale information indicating a range for displaying the setting information or the performance value displayed as the display information, the range being associated with each of the items in advance. The control device for an injection molding machine according to claim 1.

3. the output unit outputs inquiry display information inquiring whether to switch to the item previously associated with the process selected when the reception unit receives the selection of the process, and outputs the display information of the item previously associated with the process selected when the reception unit receives the selection of the switch. The control device for an injection molding machine according to claim 1 or 2.

4. The output unit outputs to the display device a screen in which the display information of the item previously associated with each of the plurality of steps is displayed in a different area for each of the plurality of steps.

4. The control device for an injection molding machine according to claim 1.

5. The reception unit receives an operation to change the item previously associated with the process, the output unit outputs the display information of the item previously associated with the process based on the change when the acceptance unit accepts the selection of the process.

5. The control device for an injection molding machine according to claim 1.

6. a reception unit that receives a selection of a process of the injection molding machine and a selection of setting information indicating settings of the process or an item indicating a performance value of the process as information to be displayed regarding the process; an output unit that outputs, when the reception unit receives a selection of the process, to a display device, display information that represents, in a graph, the setting information or the change in the performance value based on the item that is previously associated with the process that has been selected; An injection molding machine having

7. a receiving step of receiving a selection of a process of the injection molding machine and a selection of setting information indicating settings of the process or an item indicating a performance value of the process as information to be displayed regarding the process; an output step of outputting, when the receiving step receives the selection of the process, display information that represents, in a graph, the setting information or the change in the performance value based on the item that is previously associated with the process that has been selected, to a display device; A program for causing a computer to execute the following.

Images